Helper class to queue the loading of Effects. More...

#include <effectloader.h>

Inheritance diagram for KWin::AbstractEffectLoadQueue:

Public Member Functions
	AbstractEffectLoadQueue (QObject *parent=nullptr)

Protected Slots
virtual void	dequeue ()=0

Friends
template<typename Loader , typename QueueType >
class	EffectLoadQueue

Detailed Description

Helper class to queue the loading of Effects.

Loading an Effect has to be done in the compositor thread and thus the Compositor is blocked while the Effect loads. To not block the compositor for several frames the loading of all Effects need to be queued. By invoking the slot dequeue() through a QueuedConnection the queue can ensure that events are processed between the loading of two Effects and thus the compositor doesn't block.

As it needs to be a slot, the queue must subclass QObject, but it also needs to be templated as the information to load an Effect is specific to the Effect Loader. Thus there is the AbstractEffectLoadQueue providing the slots as pure virtual functions and the templated EffectLoadQueue inheriting from AbstractEffectLoadQueue.

The queue operates like a normal queue providing enqueue and a scheduleDequeue instead of dequeue.

Definition at line 208 of file effectloader.h.

Constructor & Destructor Documentation

◆ AbstractEffectLoadQueue()

KWin::AbstractEffectLoadQueue::AbstractEffectLoadQueue ( QObject * parent = nullptr )

inlineexplicit

Definition at line 212 of file effectloader.h.

Member Function Documentation

◆ dequeue

virtual void KWin::AbstractEffectLoadQueue::dequeue ( )

protectedpure virtualslot

Implemented in KWin::EffectLoadQueue< Loader, QueueType >, and KWin::EffectLoadQueue< KWin::ScriptedEffectLoader, KPluginMetaData >.

Friends And Related Symbol Documentation

◆ EffectLoadQueue

template<typename Loader , typename QueueType >

friend class EffectLoadQueue

friend

Definition at line 221 of file effectloader.h.

The documentation for this class was generated from the following file:

src/effect/effectloader.h

Public Member Functions

Protected Slots